Growth facets of SrIrO 3 thin films and single crystals

Fruchter, L.; Brouet, V.; Brisset, F.; Moutaabbid, H.; Klein, Y.

Type de document :

Compte-rendu et recension critique d'ouvrage

DOI :

10.1039/C9CE00535H

Titre :

Growth facets of SrIrO 3 thin films and single crystals

Auteur(s) :

Fruchter, L. [Auteur]
Laboratoire de Physique des Solides [LPS]
Brouet, V. [Auteur]
Laboratoire de Physique des Solides [LPS]
Brisset, F. [Auteur]
Centre d'Études en Civilisations, Langues et Lettres Étrangères - ULR 4074 [CECILLE]
Moutaabbid, H. [Auteur]
Institut de minéralogie, de physique des matériaux et de cosmochimie [IMPMC]
Klein, Y. [Auteur]
Institut de minéralogie, de physique des matériaux et de cosmochimie [IMPMC]

Titre de la revue :

Crystengcomm

Pagination :

3822-3828

Éditeur :

Royal Society of Chemistry

Date de publication :

2019-06-24

Discipline(s) HAL :

Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

Résumé en anglais : [en]

The crystallographic orientation of SrIrO3 surfaces is decisive for the occurrence of topological surface states. We show from density functional theory computations that (001) and (110) free surfaces have comparable ...
Lire la suite >The crystallographic orientation of SrIrO3 surfaces is decisive for the occurrence of topological surface states. We show from density functional theory computations that (001) and (110) free surfaces have comparable energies, and, correspondingly, we experimentally observe that single micro-crystals exhibit both facet orientations. These surfaces are found to relax over typically the length of one oxygen octahedron, defining a structural critical thickness for thin films. A reconstruction of the electronic density associated to tilts of the oxygen octahedra is observed. At the opposite, thin films have invariably been reported to grow along the (110) direction. We show that the interfacial energy associated to the oxygen octahedra distortion for epitaxy is likely at the origin of this specific feature, and propose leads to induce (001) SrIrO3 growth.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Projet ANR :

Physics: Atoms, Light, Matter
Nouveaux états électroniques corrélés émergeant d'un couplage spin-orbite fort : le cas des iridates

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